Compare all fields in SkSL::Layout::operator==
Compare all fields in SkSL::Layout::operator==

Change-Id: I344bf5ddee4242f17325377a664ddb17b26e6f31
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/285789
Commit-Queue: Brian Osman <794c0b5534edf5601d88e1d41975d0262da12894@google.com>
Commit-Queue: Ethan Nicholas <d2cfb8c2f603266f4dc3a6f09acbcc0089603b37@google.com>
Auto-Submit: Brian Osman <794c0b5534edf5601d88e1d41975d0262da12894@google.com>
Reviewed-by: Ethan Nicholas <d2cfb8c2f603266f4dc3a6f09acbcc0089603b37@google.com>

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